Abstract:
Scientists have built a working memory chip that is roughly the size of a white blood cell — about 1/2000th of an inch on a side.

Although the memory chip is modest in capacity with 160,000 bits of information, the bits were crammed together so tightly that it is the densest ever made. The achievement points to one possible path for continuing the exponential growth of computing power even after current silicon chip-making technology hits fundamental limits in 10 to 20 years.